I think RB is one of the most underrated drivers in F1 today. But just forget the years in MS shadow, and think about his unbelievable achievements before Ferrari: Donington '93 (running second in only his 3rd race, with a midfield Jordan), bringing home the Stewart in second in Monaco '97(only point for Stewart that year), and several others.
And even at Ferrari: magnificent victory in Germany, and he could 've won Monza and Indy last year if it wasn't for his team to screw up.